Tungsten needles have a wide range of applications due to their unique properties, including high melting point, excellent strength, and good electrical conductivity. Here are some common uses of tungsten needles:
Electrodischarge machining (EDM): Tungsten needles are used in EDM, a precision machining process where electrical discharges are used to shape or cut conductive materials. Tungsten needles act as electrodes, delivering electrical energy to create the desired shape in the workpiece.
Electrolysis and electroplating: Tungsten needles are employed in electrolysis and electroplating processes. They serve as electrodes to facilitate electrochemical reactions, such as metal deposition or corrosion prevention.
Scribing and cutting: Tungsten needles are utilized in precision scribing and cutting applications. Their high hardness allows them to create precise grooves, score lines, or cut through materials like glass, ceramics, or thin metals.
Micro-dispensing and micro-injection: Tungsten needles are used in micro-dispensing systems for the precise delivery of small liquid volumes in applications such as inkjet printing, microfluidics, or drug delivery. They can also be used for micro-injection procedures in biology and medicine.
Atomic force microscopy (AFM): Tungsten needles are used as scanning probe tips in AFM, a high-resolution imaging technique for studying surfaces at the atomic or molecular scale. The sharpness and durability of tungsten needles enable precise and sensitive measurements of surface topography and material properties.
Microneedles for medical applications: Tungsten needles are utilized in the fabrication of microneedles used for drug delivery, blood sampling, or minimally invasive procedures. The small size and sharpness of tungsten needles enable controlled penetration of the skin or tissues with minimal discomfort.
High-temperature applications: Tungsten needles are employed in high-temperature environments where their high melting point and strength are advantageous. They can be used as probes, heating elements, or supports in furnaces, thermocouples, or other high-temperature apparatus.
Scientific research and experimentation: Tungsten needles find applications in various scientific research fields, including physics, chemistry, materials science, and biology. They can be used for sample manipulation, micro-scale experiments, or as components in specialized instruments.
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